Damage type to tank against:Here

Angels: Omni, primarily Exp/Kin
Guristas: Kin/Therm
Serpentis: Therm/Kin
Sansha: EM/Therm
Blood: EM/Therm
Amarr: EM/Therm
Caldari: Kin/Therm
Gallente: Therm/Kin
EoM: Kin/Therm
Seven: Omni, mainly Therm
Mercenaries: Omni, mainly Therm/EM
Rogue Drones: Omni, primarily EM/Exp

Damage types to deal:

Angels: Exp/Kin
Guristas: Kin/Therm
Serpentis: Therm/Kin
Sansha: Em/Therm
Blood: EM/Therm
Amarr: Em/Therm
Caldari: Kin/Therm
Gallente: Therm/Kin
EoM: Kin/Therm
Seven: Therm
Rogue Drones: EM for L1-L3, Exp for L4
Mercenaries: Therm

Stacking penalty mod for Nth module or rig=
0.5 ^ [ ((N-1) / 2.22292081)^2 ]
1st: 100%
2nd: 86.9%
3rd: 57.1%
4th: 28.3%
5th: 10.6%
note: modules with highest bonuses are calculated first.